package com.yhw.springbootsy3.dao.mapper;

import com.yhw.springbootsy3.dao.pojo.Book;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface BookMapper {
//    //注解方式
//    @Select("select * from book where id=#{id}")
//    Book findBookBy(int id);

    Book findBookBy(int id);


}
